Here are the two items I bought to enable full use of the Ultra as a preamp front end for my HT system. Note that these would NOT be necessary if you use the Ultra only as a front end for an HT and one or two other 2-channel sources. (Steve, if you found some other way to solve this, please let me know.) But I have two other sources (HD cable and Apple TV) that have 5.1audio worth putting through the Decware system. Yes, I could run their HDMI outputs straight into the Panasonic flat panel, but the sound coming out of flat panels generally, and the Pannys specifically, is so atrocious, and it seems quite a waste to have this sort of audio system and not get the full benefit of it.
Note also that, if any one of your sources, be it the DVD, Blu-Ray, or something else, also has control center input capabilities, you might not need this adaptation. I bought two items from HDTV Supply:
1.
A 2x1 5.1 channel switcher. A 3.1 would have been more convenient, but it's not mandatory. Depending on physical layout and cabling, This will permit me to have two 5.1 sources running into the Ultra. When and if I decide to add a third, I will get one more of these.
Biggest downside of these: no IR remote control. I have looked all over for one with IR, asked the vendors, etc. No luck.
2.
A 4x2 HDMI-7.2 matrix switcher. This is what lets me separate the 5.1 audio channels from the HDMI supplied by the Cable and the ATV. Note that it is possible that this unit will be all I need. The folks on the phone and email—who were all great, BTW; HDTV definitely has my business for the future—sent me the user manual, and walked through it with me. We think it might be possible to plug the Blu-Ray audio out into the 4x2, along with the HDMI from the cable and the ATV. If that works, I am set, an I have remote control.
Granted, this won't be quite as automatic as the current Denon system, because everything there is remote controllable. It's pretty cool to touch one rectangle on the Harmony remote control screen, and everything turns on and is ready ro go. But quality has its price, eh?
Let me know if you have any questions. (NOTE: cross-posted in ERR forum as well. Hope that's okay.)